The San Bernardino Strait is a narrow waterway located in the Philippines, separating the islands of Luzon and Samar. It connects the Philippine Sea to the Samar Sea and plays a crucial role in maritime navigation in the region. This strait is approximately 20 kilometers long and is known for its strong currents and deep waters. It is an important route for shipping and fishing activities, contributing to the local economy and connecting various islands in the archipelago.